Results 51 to 60 of about 2,812,701 (287)

Advanced Iterative Procedures for Solving the Implicit Colebrook Equation for Fluid Flow Friction

open access: yesAdvances in Civil Engineering, 2018
The empirical Colebrook equation from 1939 is still accepted as an informal standard way to calculate the friction factor of turbulent flows (4000 
Pavel Praks, Dejan Brkić
doaj   +1 more source

The Joint Distribution of Stock Returns is Not Elliptical [PDF]

open access: yesSSRN Electronic Journal, 2010
Using a large set of daily US and Japanese stock returns, we test in detail the relevance of Student models, and of more general elliptical models, for describing the joint distribution of returns. We find that while Student copulas provide a good approximation for strongly correlated pairs of stocks, systematic discrepancies appear as the linear ...
Chicheportiche, Rémy   +1 more
openaire   +3 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Integrating Entropy and Copula Theories for Hydrologic Modeling and Analysis

open access: yesEntropy, 2015
Entropy is a measure of uncertainty and has been commonly used for various applications, including probability inferences in hydrology. Copula has been widely used for constructing joint distributions to model the dependence structure of multivariate ...
Zengchao Hao, Vijay P. Singh
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Infrared Image Classification and Detection Algorithm for Power Equipment Based on Improved YOLOv10

open access: yesIEEE Access
Real-time target detection has important applications in industry. Identifying the type of power equipment in massive infrared image data for heat fault diagnosis has emerged as a crucial issue that needs to be addressed in this field.
Xiu Ji   +3 more
doaj   +1 more source

Modelling Risk Dependencies in Insurance Using Survival Clayton Copula [PDF]

open access: yesStatistika: Statistics and Economy Journal
Our aim in this paper is to show the use of survival Clayton copula as a suitable tool for modelling risk dependencies in insurance. Apurpose-built simulation of an adequate upper tail dependence can be an important part of the aggregation of risks in an
Vladimír Mucha   +2 more
doaj   +1 more source

Single or joint amplitude distribution analyzer Patent [PDF]

open access: yes, 1967
Cathode ray oscilloscope for analyzing electrical waveforms representing amplitude distribution of time ...
Tetsuka, G. M.
core   +1 more source

Joint Distributions for Interacting Fluid Queues

open access: yesQueueing Systems, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dirk P. Kroese, Werner R. W. Scheinhardt
openaire   +5 more sources

On Non-Interactive Simulation of Joint Distributions [PDF]

open access: yesIEEE Transactions on Information Theory, 2016
We consider the following non-interactive simulation problem: Alice and Bob observe sequences $X^n$ and $Y^n$ respectively where $\{(X_i, Y_i)\}_{i=1}^n$ are drawn i.i.d. from $P(x,y),$ and they output $U$ and $V$ respectively which is required to have a joint law that is close in total variation to a specified $Q(u,v).$ It is known that the maximal ...
Sudeep Kamath, Venkat Anantharam
openaire   +3 more sources

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